<!doctype html>
<html>
  <head>
    <style>
     body {
       min-height: 1000px;
     }

     #example {
       height: 100px;
     }

     .msg {
       position: fixed;
       top: 20px;
       left: 10px;
     }

     .sensor {
       display: block;
       width: 50px;
       height: 50px;
       background: red;
     }

     #example-container {
       width: 200px;
       height: 200px;
       border: 1px solid #000;
       overflow: auto;
       position: relative;
     }

     #example-container .inner {
       width: 800px;
       height: 800px;
     }

     #example-container .sensor {
       position: absolute;
       left: 400px;
       top: 400px;
     }

     #example-container .msg {
       top: 40px;
     }

     #example-container .msg:before {
       content: 'Contained ';
     }

     #info {
       position: fixed;
       z-index: 1;
       top: 10px;
       right: 10px;
       width: 400px;
     }

     #foreground {
       position: relative;
       z-index: 2;
       background: #FFF;
       width: 300px;
     }
    </style>
  </head>
  <body>
    <div id="info">
      <p>In this example, the first element's visibility will change as you scroll the page. The second element uses the `containment` prop to tell whether it is within the visible part of the container. Scroll around to see it change.</p>
      <p>Note that the "Contained Element" in this example is also using the <code>`partialVisibility`</code> prop. So it will be considered "visible" if even part of it is within the viewport.</p>
    </div>
    <div id="foreground">
      <div id="example"></div>
      <div id="example-container">
        <div class="inner"></div>
      </div>
    </div>
    <script src="https://unpkg.com/react@0.14.8/dist/react.min.js"></script>
    <script src="https://unpkg.com/react-dom@0.14.8/dist/react-dom.min.js"></script>
    <script src="https://unpkg.com/react-visibility-sensor@3.2.1/dist/visibility-sensor.min.js"></script>
    <script src="./main.js"></script>
  </body>
</html>
